Last updated: August 1, 2025
Understanding the UV Index in 12 de Diciembre (Sombreretillo), Mexico is crucial for safeguarding your skin and overall health under the Sun's powerful rays. High UV levels, especially during midday, can lead to painful sunburns and long-term skin damage if not properly managed. In this region, characterized by its BSh climate, residents and visitors should be particularly aware of exposure risks, as UV readings peak around 1 PM, reaching extreme values of 14—indicating a high potential for harm. Being informed about these levels not only helps in taking necessary precautions but also promotes lasting skin health in such a sun-drenched environment. Stay aware, stay protected!
The UV Index showcases a dramatic rise in solar intensity as the day progresses, peaking impressively at 14 between 2 PM and 3 PM. Starting from a low of 0 at 7 AM, it climbs steadily, reaching 8 by 11 AM and soaring to its maximum at 12 PM with a striking UV Index of 11. The sun's rays are particularly potent between 1 PM and 2 PM, where they hit their zenith at 13 and 14, respectively. As the afternoon wanes, the intensity begins to taper off, dropping to 10 by 4 PM, 7 at 5 PM, and finally settling back to 1 by 7 PM. During peak hours, it's crucial to take protective measures against UV exposure!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 13 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels exhibit significant fluctuations, peaking between March and October when the UV Index often reaches extreme levels of 12-14. The highest risk months for UV exposure are April, May, July, and August, with burn times as short as 10 minutes in these months. Visitors and residents are advised to take precautionary measures during these periods, including applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak hours to reduce the risk of skin damage. In contrast, December and January exhibit lower UV levels, although January still maintains a very high category with a burn time of 15 minutes, so it's important to remain vigilant even in the cooler months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12 de Diciembre (Sombreretillo) | 8 | 10 | 12 | 14 | 14 | 13 | 14 | 13 | 13 | 11 | 9 | 7 |
| Guadalajara UVI | 9 | 11 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 9 | 8 |
| Iztapalapa UVI | 10 | 12 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 12 | 10 | 8 |
| Ecatepec de Morelos UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
| Mexico City UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |